emulator: "TGPulse-Next"
type: libretro
core_classification: community_fork
source: "https://github.com/Zer0one/tgpulse-next-libretro"
upstream: "https://github.com/Zer0one/TGPulse-Next"
profiled_date: "2026-11-09"
source_commit: "ef21af3921f3f3914ed698ff8962c88b5b1322cd"
upstream_commit: "3c75f9b2b155e8bb50a225c69520948ef72ecd48"
upstream_frozen: "The port's tree was imported as a snapshot of TGPulse-Next main at this commit, as NOTICE records, with a fresh history."
core_version: "0.1.0.13"
version_basis:
  kind: file
  path: "crates/tgpulse-libretro/src/lib.rs"
  pattern: 'library_version: c"([^"]+)"'
display_name: "Sega - Model 1 (TGPulse-Next)"
cores:
  - "tgpulse_next_m1"
systems:
  - sega-model1

notes: |
  A Sega Model 1 libretro core in Rust, built from TGPulse-Next, itself based
  on deepblueworks/TGPulse. This build compiles the Model 1 machine only. The
  content is a MAME set in a .zip, recognised by its file names against the
  game list built into the core, and a Model 2 set is refused.
  ref: NOTICE:1-3, crates/tgpulse-libretro/src/lib.rs:2490-2500,
       crates/tgpulse-libretro/src/lib.rs:2040-2054

  Every Model 1 game runs the firmware of its I/O board, which the set does
  not need to carry. It is read from model1io.zip or model1io2.zip, in
  <system>/tgpulse-next/, then beside the game, then from the game's own
  archive. A member counts only at 65536 bytes and the SHA-1 the core
  hardcodes, and a bad copy passes on to the next place. Without a valid
  copy the game does not start.
  ref: crates/tgpulse-libretro/src/lib.rs:720-728, crates/tgpulse-libretro/src/lib.rs:2058-2059,
       crates/tgpulse-core/src/loader.rs:403-417, crates/tgpulse-core/src/roms_db.rs:324-346,
       crates/tgpulse-core/src/loader/model1_bios.rs:8-29, crates/tgpulse-core/src/loader/model1_bios.rs:36-48

  The NetMerc diagnostic display draws the cabinet's HD44780 LCD with the
  character ROM of hd44780.zip, read in the same three places. It is off by
  default, and without the ROM no LCD is drawn.
  ref: crates/tgpulse-core/src/loader/model1_bios.rs:6, crates/tgpulse-core/src/loader/model1_bios.rs:31-34,
       crates/tgpulse-libretro/src/diagnostic_overlay.rs:28-35

  NetMerc's sample ROMs are bad dumps. The Audio Donor option takes the PCM
  banks of vf, vr, swa or wingwar from that game's set beside the content,
  vf by default, and a procedural fallback plays without one.
  ref: crates/tgpulse-libretro/src/lib.rs:475-504, crates/tgpulse-core/src/loader/audio_donor.rs:34-71,
       crates/tgpulse-core/src/config.rs:6-26

archive_prefix: "tgpulse-next"

files:
  - name: "model1io.zip"
    path: "tgpulse-next/model1io.zip"
    system: sega-model1
    required: true
    category: bios_zip
    description: "Sega Model 1 I/O board device set"
    note: "I/O firmware of Virtua Racing, Virtua Formula, Virtua Fighter and Star Wars Arcade. Also read beside the game, then from the game's own archive."
    source_ref: "crates/tgpulse-core/src/loader/model1_bios.rs:36-48, crates/tgpulse-core/src/loader/model1_bios.rs:8-12"

  - name: "epr-14869.25"
    archive: model1io.zip
    system: sega-model1
    required: true
    size: 65536
    sha1: "b65fdd0ad31794a565a0ca4dc67a3f16b329fd71"
    validation: [size, sha1]
    note: "Read for vr and vformula."
    source_ref: "crates/tgpulse-core/src/loader/model1_bios.rs:40, crates/tgpulse-core/src/roms_db.dat:3605, crates/tgpulse-core/src/roms_db.dat:3788"

  - name: "epr-14869b.25"
    archive: model1io.zip
    system: sega-model1
    required: true
    size: 65536
    sha1: "af0fe245eb9fa3c3c60e4b685f1e779f83d894f9"
    validation: [size, sha1]
    note: "Read for vf, swa and swaj."
    source_ref: "crates/tgpulse-core/src/loader/model1_bios.rs:41, crates/tgpulse-core/src/roms_db.dat:3009, crates/tgpulse-core/src/roms_db.dat:3061, crates/tgpulse-core/src/roms_db.dat:3358"

  - name: "model1io2.zip"
    path: "tgpulse-next/model1io2.zip"
    system: sega-model1
    required: true
    category: bios_zip
    description: "Sega Model 1 advanced I/O board device set"
    note: "I/O firmware of Wing War and NetMerc. Also read beside the game, then from the game's own archive."
    source_ref: "crates/tgpulse-core/src/loader/model1_bios.rs:36-48, crates/tgpulse-core/src/loader/model1_bios.rs:8-12"

  - name: "epr-16891.6"
    archive: model1io2.zip
    system: sega-model1
    required: true
    size: 65536
    sha1: "3079397c7241c1a6f494fa310faff0989dfa04a0"
    validation: [size, sha1]
    note: "Read for wingwar, wingwar360, wingwarj and wingwaru."
    source_ref: "crates/tgpulse-core/src/loader/model1_bios.rs:42, crates/tgpulse-core/src/roms_db.dat:3971"

  - name: "epr-18021.6"
    archive: model1io2.zip
    system: sega-model1
    required: true
    size: 65536
    sha1: "bf5b9aad99c0f8f5e262e0855796f39119d11a97"
    validation: [size, sha1]
    note: "Read for netmerc."
    source_ref: "crates/tgpulse-core/src/loader/model1_bios.rs:43, crates/tgpulse-core/src/roms_db.dat:1958"

  - name: "hd44780.zip"
    path: "tgpulse-next/hd44780.zip"
    system: sega-model1
    required: false
    category: bios_zip
    description: "HD44780 LCD controller character ROM set"
    note: "Read only when the NetMerc diagnostic display is switched on. Also read beside the game, then from the game's own archive."
    source_ref: "crates/tgpulse-core/src/loader/model1_bios.rs:31-34, crates/tgpulse-libretro/src/diagnostic_overlay.rs:28-35"

  - name: "hd44780_a00.bin"
    archive: hd44780.zip
    system: sega-model1
    required: false
    size: 4096
    sha1: "65cf075a988cdcbb316b9afdd0529b374a1a65ec"
    validation: [size, sha1]
    note: "HD44780 A00 character ROM, the font of the diagnostic LCD."
    source_ref: "crates/tgpulse-core/src/loader/model1_bios.rs:6, crates/tgpulse-core/src/loader/model1_bios.rs:31-34"